d0b9173caa
Providing the context to the ast generator allows for additional simplifcations and -- more importantly -- allows to generate loops with only partially bounded domains, assuming the domains are bounded for all parameter configurations that are valid as defined by the context. This change fixes the crash reported in http://llvm.org/PR30956 The original reason why we did not include the context when generating an AST was that CLooG and later isl used to sometimes transfer some of the constraints that bound the size of parameters from the context into the generated AST. This resulted in operations with very large constants, which sometimes introduced problematic integer overflows. The latest versions of the isl AST generator are careful to not introduce such constants. Reported-by: Eli Friedman <efriedma@codeaurora.org> llvm-svn: 286442
90 lines
4.7 KiB
LLVM
90 lines
4.7 KiB
LLVM
; RUN: opt -S %loadPolly -polly-vectorizer=stripmine -polly-opt-isl -polly-ast -analyze < %s | FileCheck %s
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; CHECK: // 1st level tiling - Tiles
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; CHECK-NEXT: #pragma known-parallel
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; CHECK-NEXT: for (int c0 = 0; c0 <= floord(ni - 1, 32); c0 += 1)
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; CHECK-NEXT: for (int c1 = 0; c1 <= floord(nj - 1, 32); c1 += 1)
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; CHECK-NEXT: for (int c2 = 0; c2 <= floord(nk - 1, 32); c2 += 1) {
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; CHECK-NEXT: // 1st level tiling - Points
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; CHECK-NEXT: for (int c3 = 0; c3 <= min(31, ni - 32 * c0 - 1); c3 += 1) {
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; CHECK-NEXT: for (int c4 = 0; c4 <= min(7, -8 * c1 + nj / 4 - 1); c4 += 1)
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; CHECK-NEXT: for (int c5 = 0; c5 <= min(31, nk - 32 * c2 - 1); c5 += 1) {
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; CHECK-NEXT: // SIMD
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; CHECK-NEXT: for (int c6 = 0; c6 <= 3; c6 += 1)
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; CHECK-NEXT: Stmt_for_body_6(32 * c0 + c3, 32 * c1 + 4 * c4 + c6, 32 * c2 + c5);
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; CHECK-NEXT: }
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; CHECK-NEXT: if (32 * c1 + 31 >= nj)
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; CHECK-NEXT: #pragma minimal dependence distance: 1
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; CHECK-NEXT: for (int c5 = 0; c5 <= min(31, nk - 32 * c2 - 1); c5 += 1) {
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; CHECK-NEXT: // SIMD
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; CHECK-NEXT: for (int c6 = 0; c6 < nj % 4; c6 += 1)
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; CHECK-NEXT: Stmt_for_body_6(32 * c0 + c3, -(nj % 4) + nj + c6, 32 * c2 + c5);
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; CHECK-NEXT: }
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; CHECK-NEXT: }
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; CHECK-NEXT: }
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; Function Attrs: nounwind uwtable
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define void @kernel_gemm(i32 %ni, i32 %nj, i32 %nk, double %alpha, double %beta, [1024 x double]* %C, [1024 x double]* %A, [1024 x double]* %B) #0 {
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entry:
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%cmp.27 = icmp sgt i32 %ni, 0
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br i1 %cmp.27, label %for.cond.1.preheader.lr.ph, label %for.end.22
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for.cond.1.preheader.lr.ph: ; preds = %entry
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br label %for.cond.1.preheader
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for.cond.1.preheader: ; preds = %for.cond.1.preheader.lr.ph, %for.inc.20
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%indvars.iv33 = phi i64 [ 0, %for.cond.1.preheader.lr.ph ], [ %indvars.iv.next34, %for.inc.20 ]
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%cmp2.25 = icmp sgt i32 %nj, 0
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br i1 %cmp2.25, label %for.cond.4.preheader.lr.ph, label %for.inc.20
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for.cond.4.preheader.lr.ph: ; preds = %for.cond.1.preheader
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br label %for.cond.4.preheader
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for.cond.4.preheader: ; preds = %for.cond.4.preheader.lr.ph, %for.inc.17
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%indvars.iv29 = phi i64 [ 0, %for.cond.4.preheader.lr.ph ], [ %indvars.iv.next30, %for.inc.17 ]
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%cmp5.23 = icmp sgt i32 %nk, 0
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br i1 %cmp5.23, label %for.body.6.lr.ph, label %for.inc.17
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for.body.6.lr.ph: ; preds = %for.cond.4.preheader
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br label %for.body.6
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for.body.6: ; preds = %for.body.6.lr.ph, %for.body.6
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%indvars.iv = phi i64 [ 0, %for.body.6.lr.ph ], [ %indvars.iv.next, %for.body.6 ]
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%arrayidx8 = getelementptr inbounds [1024 x double], [1024 x double]* %A, i64 %indvars.iv33, i64 %indvars.iv
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%0 = load double, double* %arrayidx8, align 8
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%arrayidx12 = getelementptr inbounds [1024 x double], [1024 x double]* %B, i64 %indvars.iv, i64 %indvars.iv29
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%1 = load double, double* %arrayidx12, align 8
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%mul = fmul double %0, %1
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%arrayidx16 = getelementptr inbounds [1024 x double], [1024 x double]* %C, i64 %indvars.iv33, i64 %indvars.iv29
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%2 = load double, double* %arrayidx16, align 8
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%add = fadd double %2, %mul
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store double %add, double* %arrayidx16, align 8
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp ne i32 %lftr.wideiv, %nk
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br i1 %exitcond, label %for.body.6, label %for.cond.4.for.inc.17_crit_edge
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for.cond.4.for.inc.17_crit_edge: ; preds = %for.body.6
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br label %for.inc.17
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for.inc.17: ; preds = %for.cond.4.for.inc.17_crit_edge, %for.cond.4.preheader
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%indvars.iv.next30 = add nuw nsw i64 %indvars.iv29, 1
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%lftr.wideiv31 = trunc i64 %indvars.iv.next30 to i32
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%exitcond32 = icmp ne i32 %lftr.wideiv31, %nj
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br i1 %exitcond32, label %for.cond.4.preheader, label %for.cond.1.for.inc.20_crit_edge
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for.cond.1.for.inc.20_crit_edge: ; preds = %for.inc.17
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br label %for.inc.20
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for.inc.20: ; preds = %for.cond.1.for.inc.20_crit_edge, %for.cond.1.preheader
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%indvars.iv.next34 = add nuw nsw i64 %indvars.iv33, 1
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%lftr.wideiv35 = trunc i64 %indvars.iv.next34 to i32
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%exitcond36 = icmp ne i32 %lftr.wideiv35, %ni
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br i1 %exitcond36, label %for.cond.1.preheader, label %for.cond.for.end.22_crit_edge
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for.cond.for.end.22_crit_edge: ; preds = %for.inc.20
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br label %for.end.22
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for.end.22: ; preds = %for.cond.for.end.22_crit_edge, %entry
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ret void
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}
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